• noun:   the outer boundary of an artifact or a material layer constituting or resembling such a boundary

  Example: "There is a special cleaner for these surfaces"

• noun:   a superficial aspect as opposed to the real nature of something

  Example: "It was not what it appeared to be on the surface"

• noun:   the extended two-dimensional outer boundary of a three-dimensional object

  Example: "They skimmed over the surface of the water"

• noun:   the outermost level of the land or sea

  Example: "Earthquakes originate far below the surface"

• noun:   information that has become public

  Example: "The facts had been brought to the surface"

• noun:   a device that provides reactive force when in motion relative to the surrounding air; can lift or control a plane in flight
• verb:   come to the surface
• verb:   put a coat on; cover the surface of; furnish with a surface
• verb:   appear or become visible; make a showing

  Example: "I hope the list key is going to surface again"

• adjective:   on the surface

  Example: "Surface materials of the moon"

• name:  A surname (rare: 1 in 50000 families; popularity rank in the U.S.: #7119)

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